Thread: Convince me to go 700c, or convince me to stay 27
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Old 06-01-14, 11:18 PM
  #25  
Sixty Fiver
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Originally Posted by IthaDan
It's 4mm difference between 27" (630mm BSD) and 700c (622mm BSD). Don't know 650b off the top of my head but it's certainly a lot more than a 4mm difference in radius from a 27" wheel.
584mm vs 630 mm is a 23mm difference at the rim.

19mm difference with 622.
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